TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Kojić, Marija
AU  - Milošević, Milena
AU  - Rosić, Milena
AU  - Waisi, Hadi
AU  - Božilović, Bojana
AU  - Manić, Nebojša
AU  - Dodevski, Vladimir
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7162
AB  - Thermo-chemical conversion via the pyrolysis of cigarette butt (CB) filters was successfully valorized and upcycled in the pre-carbonization and carbonization stages. The pre-carbonization stage (devolatilization) of the precursor material (cellulose acetate filter, r-CAcF) was analyzed by micro-scale experiments under non-isothermal conditions using TG-DTG-DTA and DSC techniques. The results of a detailed kinetic study showed that the decomposition of r-CAcF takes place via complex mechanisms, including consecutive reaction steps and two single-step reactions. Consecutive stages include the α-transition referred to as a cellulose polymorphic transformation (cellulose I → II) through crystallization mechanism changes, where a more thermodynamically ordered system was obtained. It was found that the transformation rate of cellulose I → II (‘cellulose regeneration’) is strongly affected by the presence of alkali metals and the deacetylation process. Two single-step reactions showed significant overlapping behavior, which involves a nucleation-controlled scission mechanism (producing levoglucosan, gaseous products, and abundant radicals) and hydrolytic decomposition of cellulose by catalytic cleavage of glycosidic bonds with the presence of an acidic catalyst. A macro-scale experiment showed that the operating temperature and heating rate had the most notable effects on the total surface area of the manufactured carbon. A substantial degree of mesoporosity with a median pore radius of 3.1695 nm was identified. The presence of macroporosity on the carbon surface and acidic surface functional groups was observed.
T2  - Polymers
T1  - Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization
VL  - 15
IS  - 14
SP  - 3054
DO  - 10.3390/polym15143054
ER  - 

@article{
author = "Janković, Bojan Ž. and Kojić, Marija and Milošević, Milena and Rosić, Milena and Waisi, Hadi and Božilović, Bojana and Manić, Nebojša and Dodevski, Vladimir",
year = "2023",
abstract = "Thermo-chemical conversion via the pyrolysis of cigarette butt (CB) filters was successfully valorized and upcycled in the pre-carbonization and carbonization stages. The pre-carbonization stage (devolatilization) of the precursor material (cellulose acetate filter, r-CAcF) was analyzed by micro-scale experiments under non-isothermal conditions using TG-DTG-DTA and DSC techniques. The results of a detailed kinetic study showed that the decomposition of r-CAcF takes place via complex mechanisms, including consecutive reaction steps and two single-step reactions. Consecutive stages include the α-transition referred to as a cellulose polymorphic transformation (cellulose I → II) through crystallization mechanism changes, where a more thermodynamically ordered system was obtained. It was found that the transformation rate of cellulose I → II (‘cellulose regeneration’) is strongly affected by the presence of alkali metals and the deacetylation process. Two single-step reactions showed significant overlapping behavior, which involves a nucleation-controlled scission mechanism (producing levoglucosan, gaseous products, and abundant radicals) and hydrolytic decomposition of cellulose by catalytic cleavage of glycosidic bonds with the presence of an acidic catalyst. A macro-scale experiment showed that the operating temperature and heating rate had the most notable effects on the total surface area of the manufactured carbon. A substantial degree of mesoporosity with a median pore radius of 3.1695 nm was identified. The presence of macroporosity on the carbon surface and acidic surface functional groups was observed.",
journal = "Polymers",
title = "Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization",
volume = "15",
number = "14",
pages = "3054",
doi = "10.3390/polym15143054"
}

Janković, B. Ž., Kojić, M., Milošević, M., Rosić, M., Waisi, H., Božilović, B., Manić, N.,& Dodevski, V.. (2023). Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization. in Polymers, 15(14), 3054.
https://doi.org/10.3390/polym15143054

Janković BŽ, Kojić M, Milošević M, Rosić M, Waisi H, Božilović B, Manić N, Dodevski V. Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization. in Polymers. 2023;15(14):3054.
doi:10.3390/polym15143054 .

Janković, Bojan Ž., Kojić, Marija, Milošević, Milena, Rosić, Milena, Waisi, Hadi, Božilović, Bojana, Manić, Nebojša, Dodevski, Vladimir, "Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization" in Polymers, 15, no. 14 (2023):3054,
https://doi.org/10.3390/polym15143054 . .

TY  - JOUR
AU  - Hamidović, Saud
AU  - Gojgić-Cvijović, Gordana
AU  - Waisi, Hadi
AU  - Životić, Ljubomir
AU  - Janković Šoja, Svjetlana
AU  - Raičević, Vera
AU  - Lalević, Blažo
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3585
AB  - Surface mining activities, despite their benefits,
lead to the deterioration of local and regional environmental
quality and play a role in global ecosystem
pollution. This research aimed to estimate the culturable
microbial population structure at five locations near the
opencast coal mine “Kakanj” (Bosnia and Herzegovina)
via agar plate and phospholipid fatty acids (PLFA)
method and to establish its relationship to the physical
and chemical properties of soil. Using the ICP-OES
method, the heavy metal pollution of all examined locations
(overburden, former grass yard, forest, arable
soil, and greenhouse) was observed. Substantial variations
among the sites regarding the most expressed
indicators of heavy metal pollution were noted; Cr, Pb,
Ni, and Cu content ranged from 63.17 to 524.47, 20.57
to 349.47, 139.13 to 2785.67, and 25.97 to
458.73 mg/kg, respectively. In the overburden sample,
considerable low microbial activity was detected; the
bacterial count was approximately 6- to 18-fold lower in
comparison with the other samples. PLFA analysis
showed the reduction of microbial diversity, reflected
through the prevalence of normal and branched saturated
fatty acids, their ratio (ranged from 0.92 to 7.13), and
the absence of fungal marker 18:2ω6 fatty acid. The
principal component analysis showed a strong negative
impact of heavy metals Na and B on main microbial and
PLFA profiles. In contrast, stock of main chemical parameters,
including Ca, K, Fe, and pH, was positively
correlated with the microbial community structure.
PB  - Springer Nature Switzerland AG 2020
T2  - Environmental Monitoring and Assessment
T1  - Response of microbial community composition in soils affected by coal mine exploitation
VL  - 192
IS  - 6
SP  - 364
DO  - 10.1007/s10661-020-08305-2
ER  - 

@article{
author = "Hamidović, Saud and Gojgić-Cvijović, Gordana and Waisi, Hadi and Životić, Ljubomir and Janković Šoja, Svjetlana and Raičević, Vera and Lalević, Blažo",
year = "2020",
abstract = "Surface mining activities, despite their benefits,
lead to the deterioration of local and regional environmental
quality and play a role in global ecosystem
pollution. This research aimed to estimate the culturable
microbial population structure at five locations near the
opencast coal mine “Kakanj” (Bosnia and Herzegovina)
via agar plate and phospholipid fatty acids (PLFA)
method and to establish its relationship to the physical
and chemical properties of soil. Using the ICP-OES
method, the heavy metal pollution of all examined locations
(overburden, former grass yard, forest, arable
soil, and greenhouse) was observed. Substantial variations
among the sites regarding the most expressed
indicators of heavy metal pollution were noted; Cr, Pb,
Ni, and Cu content ranged from 63.17 to 524.47, 20.57
to 349.47, 139.13 to 2785.67, and 25.97 to
458.73 mg/kg, respectively. In the overburden sample,
considerable low microbial activity was detected; the
bacterial count was approximately 6- to 18-fold lower in
comparison with the other samples. PLFA analysis
showed the reduction of microbial diversity, reflected
through the prevalence of normal and branched saturated
fatty acids, their ratio (ranged from 0.92 to 7.13), and
the absence of fungal marker 18:2ω6 fatty acid. The
principal component analysis showed a strong negative
impact of heavy metals Na and B on main microbial and
PLFA profiles. In contrast, stock of main chemical parameters,
including Ca, K, Fe, and pH, was positively
correlated with the microbial community structure.",
publisher = "Springer Nature Switzerland AG 2020",
journal = "Environmental Monitoring and Assessment",
title = "Response of microbial community composition in soils affected by coal mine exploitation",
volume = "192",
number = "6",
pages = "364",
doi = "10.1007/s10661-020-08305-2"
}

Hamidović, S., Gojgić-Cvijović, G., Waisi, H., Životić, L., Janković Šoja, S., Raičević, V.,& Lalević, B.. (2020). Response of microbial community composition in soils affected by coal mine exploitation. in Environmental Monitoring and Assessment
Springer Nature Switzerland AG 2020., 192(6), 364.
https://doi.org/10.1007/s10661-020-08305-2

Hamidović S, Gojgić-Cvijović G, Waisi H, Životić L, Janković Šoja S, Raičević V, Lalević B. Response of microbial community composition in soils affected by coal mine exploitation. in Environmental Monitoring and Assessment. 2020;192(6):364.
doi:10.1007/s10661-020-08305-2 .

Hamidović, Saud, Gojgić-Cvijović, Gordana, Waisi, Hadi, Životić, Ljubomir, Janković Šoja, Svjetlana, Raičević, Vera, Lalević, Blažo, "Response of microbial community composition in soils affected by coal mine exploitation" in Environmental Monitoring and Assessment, 192, no. 6 (2020):364,
https://doi.org/10.1007/s10661-020-08305-2 . .

TY  - JOUR
AU  - Đurović, Sanja
AU  - Dragičević, Vesna
AU  - Waisi, Hadi
AU  - Pagnacco, Maja
AU  - Luković, Nevena
AU  - Knežević-Jugović, Zorica
AU  - Nikolić, Bogdan
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3392
AB  - Polyphenols present in different plant cell organelles increase the resistance of plants to various types of environmental stresses. We investigated the possibility of increasing the content of bioactive compounds in the seed of yellow soybean variety Laura. The soybean was treated during vegetation with five products based on plant extracts, on the assumption of enrichment of plants with various nutrients. Soybean flour extracts were screened spectrophotometrically for total phenolic content and antioxidant activity. The antioxidant activity was evaluated using three methods. The content of phenolic acids was determined by HPLC, and the raw protein content was estimated by the Kjeldahl method. Depending on the treatment, variations in the quantity of individual phenolic acids with up to 90% higher concentration as compared to the control were observed. Controlled usage of certain plant extracts can increase the concentration of the target group of bioactive compounds in the samples. The synergistic effect of proteins and phenolic compounds on the antioxidant activity of extracts was detected. The results of this study are not only important from the aspect of plant resistance to various types of stress, but also when considering soybean as a functional food.
PB  - Serbian Biological Society
T2  - Archives of Biological Sciences
T1  - Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products
VL  - 71
IS  - 3
SP  - 425
EP  - 434
DO  - 10.2298/ABS190123024D
ER  - 

@article{
author = "Đurović, Sanja and Dragičević, Vesna and Waisi, Hadi and Pagnacco, Maja and Luković, Nevena and Knežević-Jugović, Zorica and Nikolić, Bogdan",
year = "2019",
abstract = "Polyphenols present in different plant cell organelles increase the resistance of plants to various types of environmental stresses. We investigated the possibility of increasing the content of bioactive compounds in the seed of yellow soybean variety Laura. The soybean was treated during vegetation with five products based on plant extracts, on the assumption of enrichment of plants with various nutrients. Soybean flour extracts were screened spectrophotometrically for total phenolic content and antioxidant activity. The antioxidant activity was evaluated using three methods. The content of phenolic acids was determined by HPLC, and the raw protein content was estimated by the Kjeldahl method. Depending on the treatment, variations in the quantity of individual phenolic acids with up to 90% higher concentration as compared to the control were observed. Controlled usage of certain plant extracts can increase the concentration of the target group of bioactive compounds in the samples. The synergistic effect of proteins and phenolic compounds on the antioxidant activity of extracts was detected. The results of this study are not only important from the aspect of plant resistance to various types of stress, but also when considering soybean as a functional food.",
publisher = "Serbian Biological Society",
journal = "Archives of Biological Sciences",
title = "Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products",
volume = "71",
number = "3",
pages = "425-434",
doi = "10.2298/ABS190123024D"
}

Đurović, S., Dragičević, V., Waisi, H., Pagnacco, M., Luković, N., Knežević-Jugović, Z.,& Nikolić, B.. (2019). Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products. in Archives of Biological Sciences
Serbian Biological Society., 71(3), 425-434.
https://doi.org/10.2298/ABS190123024D

Đurović S, Dragičević V, Waisi H, Pagnacco M, Luković N, Knežević-Jugović Z, Nikolić B. Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products. in Archives of Biological Sciences. 2019;71(3):425-434.
doi:10.2298/ABS190123024D .

Đurović, Sanja, Dragičević, Vesna, Waisi, Hadi, Pagnacco, Maja, Luković, Nevena, Knežević-Jugović, Zorica, Nikolić, Bogdan, "Enhancement of antioxidant activity and bioactive compound contents in yellow soybean by plant-extract-based products" in Archives of Biological Sciences, 71, no. 3 (2019):425-434,
https://doi.org/10.2298/ABS190123024D . .